Circular piston machine



NOV. 29, H ABERMETH CIRCULAR PISTON MACHINE 5 Sheets-Sheet 1 Filed Sept. 18. 1963 29, 1956 H. ABERMETH 3,288,118

CIRCULAR PISTON MACHINE Filed Sept. 18, 1963 5 Sheets-Sheet 2 N v- 29, 1966 H. ABERMETH 3,288,118

CIRCULAR PISTON MACHINE Filed Sept. 18, 1963 5 Sheets-Sheet S United States Patent Ofitice 3,288,318 Patented Nov. 29, 1966 3,288,118 CIRCULAR PISTON MACHINE Hubert Abermeth, Cologne, Germany, assignor to Klockner-Humboldt-Deutz Aktiengesellschaft, Cologne, Germany Filed Sept. 18, 1963, Ser. No. 309,899 Claims priority, application Germany, Sept. 24, 1962, K 47,802 4 Claims. (Cl. 123-8) The present invention relates to circular piston machines. It is an object of this invention to improve circular piston machines so as to build the same more compact than herebefore while reducing the weight per horsepower.

It is another object of this invention so to design a circular piston machine that the assembly and disassembly of its parts will be greatly facilitated.

It is also an object of this invention to provide a circular piston machine as set forth in the preceding paragraphs which will permit an easy exchange of the sealing strips of the working piston.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawings, in which:

FIGURE 1 represents, partly in view and partly in section, a circular piston internal combustion engine according to the present invention;

FIGURE 2 represents a section taken along the line II-II of FIGURE 1;

FIGURES 3 to 6 illustrate on a larger scale than FIGS. 1 and 2 various details of the machine shown in FIGS. 1 and 2;

FIGURE 7 illustrates a partial section along the line VII-VII of FIGURE 1 but on a larger scale than the latter;

FIGURE 8 represents a section along the line VIIIVIII of FIGURE 7 while omitting the piston;

FIGURE 9 shows an enlargement of a portion of FIG- URE 7, said portion being indicated by the arrow VII;

FIGURE 10 illustrates a view along the line XX of FIGURE 9.

A rotary piston machine according to the present invention is characterized primarily by a stiff beam extending in longitudinal direction of the machine and having connected thereto the main members of the machine such as the housing, the side parts, the bearing blocks, the gearbox, etc. Such an arrangement makes it possible that the highly stressed parts as, for instance, those just mentioned, can be designed as strong members, whereas the chambers for the cooling water, for the conveyance of the oil, the gearbox, etc., may be designed as lightweight parts. Due to the fact that the above-mentioned main elements of the machine are connected to the stiff beam, the forces exerted by the combustion gases can be conveyed from the machine housing to the respective main bearings over the shortest way or distance. The bearings may be connected to the stiff beam by means of tie-rods through the intervention of bearing blocks. The stiff beam, so-tospeak, forms the spine for the machine whereby it will be possible to reduce the total weight of the machine over the weight heretofore customary with machines of the type involved.

Referring now to the drawing in detail and FIGS. 1 and 2 thereof in particular, the circular piston machine illustrated therein comprises a stifi? beam or girder 1 which extends in longitudinal direction of the machine. Connected to said beam 1 are the main elements of the machine such as the housing 2, the side members 3, the bearing blocks 4 and the gear-box 5. The particular machine illustrated in the drawings represents a so-called multi-disc machine in which a plurality of pistons act upon a shaft common to said pistons. The shaft has line bearing portions 4a journaled on blocks 4 and eccentric portions 4b on which the pistons are mounted. The individual elements of the machine are connected to beam 1 by means of bolts 6. The bearing blocks 4 are connected to beam 1 by means of strong tie-rods 7. The machine furthermore comprises bearing covers 8 for the bearing blocks 4. For purposes of aligning the various parts of the machine, an aligning or abutment rail 9 is mounted on the stiff beam 1. It is along this rail 9 that the elements of the machine are aligned according to a plane 1111 perpendicular to the engaging surface 10 on beam 1 and parallel to the longitudinal central axis of the machine. This aligning rail brings about a precise lateral alignment of the main elements of the machine and also greatly facilitates the assembly of the entire machine.

In order to obtain a symmetrical structure, a counterrail 12 is provided opposite to the aligning rod 9.

According to a further feature of the present invention, the cooling water chambers and other chambers not sub jected to any large forces, are confined by covers which seal said chambers toward the outside. These covers 13 have their ends 14 means of screws 14a connected to the rails 9 and 12, respectively and are additionally connected to housing portion 17 by screws 14b. The rails 9 and 12 may be of different shape, and different modifications are shown in FIGS. 3 to 6.

In FIG. 3, rail 12a is bolted by bolt means 12b to beam 1 and by bolt means 12c to housing portion 17. Bolts 12d connects end 14 of cover 13 to rail 12a.

In FIG. 4, rail 9a is bolted by bolt means 9a to beam 1; and by bolt means 9b and to housing portion 17. Bolts 9d connect ends 14 of cover 13 to rail 9a.

In FIG. 5, rail 92 is connected to beam 1 by bolt means 9 and to a base portion 17a by bolt means 9g.

In FIG. 6, rail 911 is connected by bolt means 91' to beam 1 and by bolt means 9j to a member 17b.

A further feature of the present invention consists in the provision of means which will facilitate access to the customary sealing strips at the zenith portions of the piston. More specifically, a portion 17 of the entire housing 2, viz. the portion which surrounds the piston 16, is provided with an insert extending substantially over the entire width of housing portion 17. The sealing strips for the piston may be introduced and withdrawn through opening 19 in member 17 in which said insert 18 is mounted. Housing portion 17 has cavities 16a therein in which pistons 16 are disposed.

The said insert 18 is advantageously so located within the housing portion 17, that, if desired, the intake opening to the inside of housing 17 may be provided in the insert 18 itself.

As will be evident from FIGS. 9 and 10 showing the dot-dash encircled portion of FIG. 7 on a larger scale, the insert 18 has that end thereof which faces the interior of the circular piston machine provided with splined teeth 20 which fit and sealingly engage correspondingly splined portions 20a in the housing portion 17. Such an arrangement will assure that the inner confining surface of the housing portion 17 against which the sealing strips of the working piston seal, is free from interruptions through which gases may escape.

The insert 18 may be connected to the housing portion 17 in any convenient manner, for instance, by screws 21, Whereas screws 22 are provided for connecting the manifold (not shown) to said insert.

It is, of course, to be understood that the present invention is, by no means, limited to the particular construcions shown in the drawings, but also comprises any modifications within the scope of the appended claims.

What I claim is:

1. In a rotary piston machine having at least one rotary piston and having a plurality of machine parts arranged one behind the other when looking in the longitudinal direction of the axis of rotation of said piston: 21 supporting beam extending in the longitudinal direction of the axis of rotation of said piston and being spaced therefrom and supporting said machine parts, rails arranged along opposite longitudinal sides of said beam, one of said rails engaging and aligning said machine parts, means fixedly connecting said machine parts to said beam, and cover means covering at least some of said machine parts and being connected to said rails.

2. An arrangement according to claim 1, in which said piston has zenith portions provided with sealing strips and which comprises a housing surrounding said piston and provided with an insert having an opening for permitting access to said sealing strips for selectively inserting and removing the same.

References Cited by the Examiner UNITED STATES PATENTS 851,962 4/1907 Prossen. 866,964 10/1907 Bleecker 91-81 X 2,463,460 3/1949 Hodgkinson 103128 2,837,031 6/1958 Ilune 103126 MARK NEWMAN, Primary Examiner.

SAMUEL LEVINE, Examiner.

F. T. SADLER, Assistant Examiner. 

1. IN A ROTARY PISTON MACHINE HAVING AT LEAST ONE ROTARY PISTON AND HAVING A PLURALITY OF MACHINE PARTS ARRANGED ONE BEHIND THE OTHER WHEN LOOKING IN THE LONGITUDINAL DIRECTION OF THE AXIS OF ROTATION OF SAID PISTON: A SUPPORTING BEAM EXTENDING IN THE LONGITUDINAL DIRECTION OF THE AXIS OF ROTATION OF SAID PISTON AND BEING SPACED THEREFROM AND SUPPORTING SAID MACHINE PARTS, RAILS ARRANGED ALONG OPPOSITE LONGITUDINAL SIDES OF SAID BEAM, ONE OF SAID RAILS ENGAGING AND ALIGNING SAID MACHINE PARTS, MEANS FIXEDLY CONNECTING SAID MACHINE PARTS TO SAID BEAM, AND COVER MEANS COVERING AT LEAST SOME OF SAID MACHINE PARTS AND BEING CONNECTED TO SAID RAILS. 